Brake mechanism



G. MIDBOE 'BRAKE uncHANIsu Flled Deo 18, 1924 April 27 1926.

SAIS/WEL M0505 @Wim 335% M @Mime/Wm @4 atented Apr. 27, 1926'.

UNITED STATES GABRIEL Minnen,

coMrANY, on NEW YORK, N.

PATENT OFFICE.

A CORPORATION OFv DELAWARE.

BRAKE MEOHANsM.

Appneaeon'fuca December' 1s, 1924. 'serial No. 756,is31.

lTo all renom' t may concern.'

Be it known that I, Garanten Minnon, a citizen ot the United Statearesiding in the borough ci' Brooklyn or the 'city oi" New lYorlnin the State of `New York, yhave invented certain new and useful Improvements in Brake lriechanisin, of which the ollowing is aV specification, reference being had to the accompanying drawing7 forming a part hereof. f

rllhis invention relates to brake actuating devices for vehicles. Ordinarily the application of braking power in vehicle is in-k itiated by the operator through a toot pedal or its inechanical equivalent, a hand lever. rihe present invention has to do with supplementing the application of braking power by the operator through a toot pedal. Then the driver applies the brakes he does so by applying a certain amount Oi pressure to the brake pedal. To do this, however, the drivers back inust be braced. pressure which is exerted against the back rest which is ot the saine amount and in the opposite direction is taken up by the back oi' the seat. -l/Vith the conventional rigid seat this force is wasted as it is thrown into or dissipated in the loor of the vehicle. lt

is anA object of the present invention to.,

utilize the force hitherto dissipated and add it to the brake pressure already obtained through vthe toot pedal. To this end the back rest for the drivers s-eat is inovable and is connected with the brakeactuating niechanisni by a series ot levers so that the pressure applied the back by the oper-V ator when operating the brake pedal utilized in the application 'of additional braking power. in the preferred einbodinient a bell crank lever is pivoted below the rear edge of the seat with one arni extend ing upwardly within the sea-t back.. the other lever arm being connected. through a `series of links and levers with the brake actuating mechanism. l-fheu the driver-oi the vehicle attempts to apply brake pressure.by'foro-y ing down the brake pedal with his toot and braces his back against the back rest lfor this purpose the straightening of the toggle joint formed by the knee causes not only the foot pedal to be depressed but the back rest to be forced rearwardly against the arin of the bell crank lever. It desired, suitable c eviees inaybe provided such as a coil spring or other resilient means to return the arm and near therear edge y.of the seat c. rother arin 7a2 of the bellcrank 1s extensivev o1 the lever to forwardposition lwhen the pressure is removed. The invention. will now be described more particularly with reference to the accompanying drawing il lustrating a preferred embodiment thereo'l' and showing' adrivers seat and brake pedal connected in usual manner to a brake rod, the back rest being inovable according to the present invention `and connected by a series oi' links and levers to the bra-ke actuating mechanism. d Y i ln the drawing the floor of the vehicle is indicated at aand the seat for the operator 7) is indicated at c. A toot pedald-of anyV conventional type is adapted to kextend through an aperture in the floor of the rve- .hicle and is pivoted at its lowerinost end about the shaft e. An arm d of the brake pedal is connected through a ylink f with a link g pivotall'v connected to an arnrh rigidly carried with a sleeve 71, rotatable upon the sha-it lAlso carried' with the sleeve It is an erin/z2 extending at an angle to the di- Y rection of the arin /Lv and forming therewith what is: in effect a bell crank lever. The outer end of the arm h2 is connected through alink with the extremity or' the arin 7c of. a bell crank lever ci'pivoted asl at Z below The inlength and entends upwardly within the. back of the sesta"y between theV cushion e2 and the rigidback c3. The `front face 7:3 of the lever is of substantial breadth. Norinally the arin k2 is pressed forward against cushion 'cgby ineansvof a coil spring m bearing against the'rigid back c3; y

The operation ci.' the device will be apparent frein the toregoinp` description taken in connection with the accompanying drawings. lvhen the driver' applies his brakes he does so by evertii a certain aniount of' pressure to the brake pedal, say one hundred pounds. The lover is thus depressed te the position indicated at D in dotted lines.' To exert this pressure his back must be braced. The pressure which he exerts is also approximately one hundred pounds in the opposite direction and is taken by the back or" the seatv which torce is normally dissipated in the licor ot the vehicle. By permitting the back ot the seat to have a certain degree of movement advantage in ay be taken thereof'to apply additionalbraking pressure. Uien the driver. applies one hundred pounds pressure to the brake rod n. the 'operator 1n driving'the vehicle will be taken up 1n the yieldingcushion c2 and are ifoot pedal which is transmitted to vthe brake mechanism through the'bralie rod o1, connected to the link g, he also applies say one hundred pounds pressure against the a-rm ft2 of bell cranlr lever 7u and moves that arm to the posit-ion in dotted lines at 7a2 and this one hundred pounds pressure is also transmitted through the linkage shown to the brake rod a and the application ot' the two pressures is cun'iulative and results in the application ot' say two hundred pounds pressure to the brake mechanism through the The normal movements of not sufficient to cause the application of braking power.

It will thus be seen that brake actuating mechanism is provided in which double the brake power ordinarily obtained had with the same Xpenditure of 'effort on the part oi' the driver.

Various modifications may be made in the form taken by the devices to take. et? the torces applied bythe operators back and to apply them to the brake actuating'rnechanism and no limitation is intended except as indicated by the appended claims.

What I claim is:

l.. ln a vehicle, the vcombination with a seat and brake lactuating` mechanism, of' a movable back rest, a foot pedal, and 'operable connections between the. brake mechanism and the bach rest and foot pedal whereby simultaneous movement of the back rest and foot pedal actuates the brake mechanism.

2. ln a vehicle, in combination with a seat and b ako actuating mechanism, a movable backrest, means operable upon movement of the back rest to actuate Vthe brake actuating mechanism, and means to return the back to normal position.

3. In a vehicle, in combination with a seat and brake actuating mechanism, means to actuate the brake mechanism by the foot ot the seat occupant, a movableback rest,

Vand Ameans operable opon movement of the back rest to lactuate the brake actuating mechanism.

4. In a vehicle in combination ith the seat and brake actuating mechanism,rof a movable back rest, a bell crank lever pivot-ed below the seat, one arm ot said lever e2;- tending,` upwardly within the back rest and the other arm of said lever operatively connected with the brake actuating n'iechanism.

5. ln a vehicle, in combination with the seat and brake actuating mechanism, a foot pedal to actuate the brake mechanism, of a movable back rest, a bell crank lever pivoted below the seat, one arm ot' said 4lever extending upwardly within the back rest and the other arm of said lever oaeratively connected with the brake actuatingmechanisnL (i. ln a. vehicle, in combination with the sat, brake actuating` mechanism and fa :toot pedal to actuate the bralre mechanism, `ot a movable back rest, a bell crank lever pivoted below the-seat, one arm of said lever extending upwardly within the baci; rest and `the other arm of said lever operatively connected with the brake actuating mechanism, and a spring to return the lever arm to normal position. y

7. ln a vehicle, the combination with a seatand brake actuating mechanism, or' a movable back rest, a i'oot pedal, and operable connections between thebrake mechanism and the back restand foot pedal whereby simultaneous movement ofthe back rest and foot pedal in opposite Vdirections actnates the brake mechanism.

This specification lsigned this 16th day oi Dec. A. D. 11924.

GABRIEL MIDBOE. 

